US Patent 11368778 Wireless headphone system

A wireless headphone system is configured to be wirelessly coupled to a user equipment. The wireless headphone system includes at least one wireless ear-loudspeaker that can be attached to a person's ear. The at least one wireless ear-loudspeaker includes a power source and a transmitter and receiver module, and an external wireless microphone unit arranged independent of and unattached to the at least one wireless ear-loudspeaker. The external wireless microphone unit includes a power source, a transmitter- and receiver-module, at least one microphone and an attachment mechanism for attaching the external wireless microphone unit to a person.